Superconductivity and Field-Induced Magnetism in Pr2−xCexCuO4 Single Crystals
J. E. Sonier, K. F. Poon, G. M. Luke, P. Kyriakou, R. I. Miller, R. Liang, C. R. Wiebe, P. Fournier, R. L. Greene
DOI 10.1103/PhysRevLett.91.147002 · Physical Review Letters
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Abstract
We report muon-spin rotation and relaxation (μSR) measurements on single crystals of the electron-doped high-Tc superconductor Pr2−xCexCuO4. In a zero external magnetic field, superconductivity is found to coexist with dilute Cu spins that are static on the μSR time scale. In an applied field, we observe a μ+-Knight shift that is primarily due to the magnetic moment induced on the Pr ions. Below the superconducting transition temperature Tc, an additional source of local magnetic field appears throughout the volume of the sample. This finding is shown to be consistent with field-induced antiferromagnetic ordering of the Cu spins. Measurements of the temperature dependence of the in-plane magnetic penetration depth λab in the vortex state are also presented.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Pr2-xCexCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 25 | Pressure not reported | onset |
| Pr2-xCexCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 16 | Pressure not reported | onset |
| Pr2-xCexCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 15.9 | Pressure not reported | midpoint |
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